Bobbin selector mechanism for weft replenishing looms



Dec. 12, 1944. v. H. JENNINGS BOBBIN SELECTOR MECHANISM FOR WEFTREPLENISHING LOOMS 3 Sheeis-Sheet 1 Filed 001:. 23, 1943 INVENTOR VICTORH.JENNINGS H wg v ATTORNEY Dec. 12,1944.

V. H. JENNINGS BOBBIN SELECTOR MECHANISM FOR WEFT REPLENISHING LOOMSFiled Oct. 23, 1945 3 Sheets-Sheet 2 INVENTOR VICTOR H. JENNINGSATTORNEY Dec. 12, 1944. v. -|-1. JENNINGS 2,364,978

BOBBIN SELECT-OR MECHANISM FOR WEFT REPLENISHING L-OOMS Filed Oct. 23,1945 3 Sheets-Sheet 3 INVENTOR VICTOR H. JENNINGS BY awn 'ATTORNEYsuccessive picks.

Patented Dec. 12, 1944 BOBBIN SELECTOR MECHANISM FOR REPLENISHING LOOMSVictor H. Jennings, Worcester, Mass.-, assignor to Crompton & KnowlesLoom Works, Worcester, Mass, a corporation of Massachusetts ApplicationOctober 23, 1943, Serial- No. -0'l-Al0 I 13 Claims.

This invention relates to improvements in weft replenishing looms and itis the general object of the invention to provide-a loom wherein each ofa plurality of shuttles canbe replenished by bobbins drawn from aplurality of stacks of bobbins.

In the weaving of certain fabrics it is desirable to effect a mixing ofthe weft by the use of shuttles which are alternately active. By thisprocedure any slight variation in the color or weight of the weft willnot show in the fabric, since weft of one tint by one shuttle willbeclose to weft of a slightly different tint laid-byanother shuttle andthere will be a resultant blending of the tints. One form of fillingmixing loomemploys two shuttles which are alternateh active for two Inthe replenishing of shuttles in such a loom it is desirable to have aslarge a supply of reserve bobbins as possible.

When a four stack stationarymagazinev is used each of twopairs of stackscan provide bobbins for replenishing its-shuttle, and the bobbins forany shuttle can be drawn alternately from. the corresponding pair ofstacks so thatthe latter will be depleted uniformly. Inmecha-nisms'heretofore proposed for accomplishing this result. the

the action of the spring to register with the several stacks by a forcederived from the shifting shuttle boxes at the opposite end of the loom,or some part moving in timed relation with the boxes. In order that theselector may register either with the third or fourth stack it isanother object of my present invention to introduce a spring or the likein the connection between the selector and the shifting shuttle boxes,this spring being stronger than the usual spring which tends to move thecolor slide forwardly. By employing these two springs I am able tointroduce a stop for the selector for each pair of stacks and move .eachstop into. and out of stopping position so stack selector ism'odifiedand: its control altered so that the selector occupies only twopositions, one for each pair of stacks. It is: desirable, however, thatthe selector be of usual form so. that the magazine canbe converted fromfilling mix- I ing weaving to multicolor weaving wherein. the selectormust be able to register with each stack. of the magazine... It isaccordingly an important object of my present invention: to provide astationary multi-stackmagazine with mechanism for drawing bobbinsalternately from each pair of stacks by theuse of the usual: type ofselector or color slide.

In applicationSerial No. 490,151 haveshown a loom in. which a: singlepair of stacks can be used for the replenishment of one shuttle and.wherein each of two other shuttles can be replenished by a, singlestack. The 100m: shown in that application is adaptedv more particularlyfor the weaving of such fabrics as employ a coarse decorative weftinterwoven with a fine ground weft. It is another objeet ofm'y presentinvention to adapt a part of the structure shown in the aforementionedapplication for use ina filling mixing loom employing twoshuttles eachhaving its pair of stacks of reservebobbins. Th stack selector of theusual stationary magzineis urgedforwardly to" registerwith the frontstack by'a spring andis-moved-rearw-ardlyagainst that the selector willregister alternately with the stacks of a pair.

' In the aforesaid application I have shown a rocking leverfor one pairof stacks to control the position of a stop and have also set forth asystem of levers between the box motion and the selector which tends togive the latter a, disproportionately largedisplacement with respect tothe displacement of. the shifting shuttle boxes. In my present inventionI provide a shifting lever for each pair of stacks and arrange theleverage between the box motion and the selector so that the lattertends either to register with the front stack or theback stack but canbe arrested in its movement to these two positions by'stops whichregister the selector with either the second or the third. stack.Theselector can therefore register witheach stack, a condition whichsimplifies conversion to the usual four color automatic loom.

With these and other objects'in view which will appear. asthedescription proceeds, my invention resides in the combination andarrangement of parts hereinafter described and set forth.

Inthe accompanying drawings, wherein a convenient embodiment of myinvention is set forth,

Fig.v 1: is aside elevation. showing a multi-color weft replenishingmechanism. as viewed from the center of the loom and having my inventionapplied thereto,

Fig. 2 is a vertical section on line 2-2 of Fig. 1,

Fig. 3 is an. enlarged side elevation of the front pair of verticalbobbin releasers and the control mechanism therefor. shown in positionto effect delivery of a bobbin from the front stack,

Fig. 4 is a view similar to Fig. 3 but showing the rear pair of bobbinreleasers and their control mechanism in position to efiect delivery ofa bobbin: from the. last or rearmost stack,

Fig. 521s a diagrammatic view showing the connection betweenthe shiftingshuttle: boxes at the end of the loom opposite the magazine and thestack selector,

Fig. 6 is a diagonal section on line 6-5 of Fig. 3,

Figs. 7 to 10 are diagrammatic views showing the selector, stops andreleasers in different positions,

Fig. 11 is a vertical section on line' lI-l I, Fig. 3, and

Fig. 12 is a view similar to part of Fig. 1 but showing a modified formof connection between the shuttle box connector and the stack selectorlever.

A loom of the type to which my invention more particularly relates has alay provided with a gang G of two shuttle boxes A and B at the left sideand a single shuttle box C at the right side. The gang is controlled bythe usual box shifting mechanism not shown so that either box canregister with the lay Id. The gang will ordinarily shift every secondpick of the loom so that box A is active for two consecutive picks, boxB is active for the next pair of picks, box A is again active for twoconsecutive picks, etc. A connector I I extends from the gang G and istrained around sheaves l2 and I3 and then extending upwardly at themagazine end for attachment to lever l5 pivoted at IE on the magazinedesignated generally at M. A spring H has the upper end thereof anchoredwith respect to the magazine and has the lower end connected to arearwardly extending arm l8 of lever l5. The lever has an upwardlyextending arm l9 having driving relation with a collar 20 forming partof a selector designated generally at 2i and including a rod 22 carryingthe collar and slidable in front and back bearings 23 and 24,respectively, on the magazine.

The arms I8 and I9 are so proportioned that the shifting of the gang Gwill move arm l9 and the selector 2! from one extreme longitudinalposition thereof to itsother extreme position, the selector being movedby'spring IT to its extreme front position shown in Fig. 1 when gang Gis down and box A is active. When gang G shifts upwardly and box B isactive, arm [9 will be rocked rearwardly to move the selector to itsrearmost position.

The magazine in the present instance has four bobbin stacks arrangedfrom front to back and indicated in Fig. 1 at 25, 26, 27 and 28. Thesestacks are provided with reserve bobbins all of which may be of the samegeneral type, or if preferred, the front pair of stacks can be providedwith one type of weft and the rear pair with another type of weft. Eachstack is associated with a vertically slidable bobbin releaser, thesereleasers being shown at 30, 3|, 32 and 33. Each releaser has a liftinglug 35 and a depressing lug 36 and the selector is provided with frontand back fingers 31 and 38, respectively, cooperating with the releasersof the front and back pairs of stacks, respectively. As the selector 2|shifts its fingers will register with one or another of the releasersunder control of mechanism to be described.

In addition to the longitudinal movement already described the selectoralso has a rocking movement imparted to it by a floating lever mountedon the upper end of a vertically reciprocating rod 4|. This lever isunder control of the weft detector D and is connected to the selector bya rod 42. When a shuttle is at the magazine end of the loom its weftwill be'contacted by the detector D, and if sufficient weft forcontinued weaving is present a controller pin 43 will be moved forwardlyout of thepath of lever 40 depleted of weft the detector will permitcontroller pin 43 to remain in the path of lever 40 and as the rod 4|descends it will cause down motion of rod 42 and a consequent rocking ofthe selector in a counter-clockwise direction as viewed in Fig. 2 toraise its fingers 31 and 38. Whichever releaser happens to be inregister with the selector will therefore be raised and there will be acorresponding rocking of the associated bobbin cradle 45 to advance abobbin from the corresponding stack toward transfer position.

The shuttle will then be picked to the opposite side of the loom and thegang G will shift to effect a longitudinal movement of the selector 2|so that it will be out of register with the previously raised releaser.Upon return of the depleted shuttle to activity, however, the selectorwill register with the elevated releaser and lever 40 will be given anup motion due to rising of rod 4| and act through rod 42 to rock theselectorin a clockwise direction as viewed in Fig. 2 to depress itsfingers 31 and 38. The previously raised slide is therefore depressedand the corresponding cradle 45 is rocked in the reverse direction todeliver the previously received bobbin so that it can move to transferposition under a transferrer arm part of which is shown at 46.

The upper part of the magazine is provided with a second shaft whichrocks in bearings 51 on the magazine frame and has secured thereto ashelf 52. Each releaser is provided with a dog 55 normally in the idleposition indicated in Fig. 2 when the releaser is down. When a releaseris raised, however, a spring 56 on the releaser moves the dog outwardlyfrom its releaser and over the shelf 52, and as the releaser descendsthe shelf is lowered to rock shaft 50 in a clockwise direction as viewedin Fig. 2, thereby moving the shuttle feeler 5'! rearwardly to transferposition and effecting up movement of a transferrer latch 58 to transferposition in the path of a hunter 59 on the lay by means of a connector60 under control of shaft 50. When a raisedreleaser is depressed its dogresumes normal idle position so as rod 4! descends. If, however, theshuttle is 7 that it will not interfere with the subsequent upwardmovement of shelf 55 which occurs as the advancing lay L moves theshuttle feeler 51 forwardly about its stationary pivot Bl to reset thetop shaft 5 0 by a force transmitted through rod 62. It is customary inmechanisms of this type to employ a spring plunger 65 to cooperate witha wedge 66 on each releaser.

The matter thus far described, except the control of the selector by thegang G, operates in the usual manner, indication of exhaustion by thedetector D raising the selector fingers 31 and 38, and the periodicupward movement of rod 4| lowering the fingers at regularly recurringtwo-pick intervals as soon as the gang G has completed its shift. Therocking of the selector effects reciprocation of the releasers, whilethe longitudinal shifting of the selector determines which releasershall be moved.

My present invention relates to means by which the front pair of stacks25 and 26 can be caused to supply bobbins for replenishing shuttle S inbox A, while bobbins derived from stacks 21 and 28 can be used toreplenish shuttle S in box B. Each pair of stacks is provided with amechanism. which causes an alternation in the reciprocation of theassociated pair of releasers and since the alternating mechanisms aresimilar only one of them will be described in detail.

u As shown in Figs. 1 and 3, releaser 30 is provided with an upwardextension 10 having a head TI and a second dog I2 pivoted to theextension at 1:3 and under control of a compression, spring I4 whichtends to. move the dog outwardly or to the right. A plateI5 secured tothe magazine has a lug I6 which engages and holds the dog I2 idle whenthe releaser 30 is down.

The releaser 3| is similarly providedwith an upward extension 80 havinga head BI provided with a dog 82 pivoted at 83 and acted on by a spring84 similar to spring 14. Spring 84 tends to move the dog 82 to the leftfrom its idle position when the releaser 3| is raised. When releaser3lis down the dog 82 will engage a second lug 85 on plate I5 and be heldin idle position.

Plate I5 has a frontiwall 86 on which a lever 81 is pivoted to the plateat 88. The forward or right end of lever 81 as viewed in Fig. 3 isprovided with a stud 89 for engagement with dog I2, while the rear endof the lever is provided with another stud 90 for cooperation with thedog 82. A spring 9| acts frictionally as indicated in Fig. 6 to hold thelever 81 in any position to which it may be moved. The studs 80 and 90lie beyond the idle position of their respective dogs I2 and 82 andtherefore can move upwardly without interference by the dogs.

A rod 95 is slotted at its upper end as at 96 to receive a controller orstud 91 on lever 81 to the right of pivot 88, as shown in Fig. 3. Thelower end of rod 95 is secured to an inverted U-shaped stop I having twodepending arms I.0I which straddle rod 22, see Fig. 11. The selector ismade with a front hub I04 corresponding to finger 31 and a rear hub I04corresponding to finger 38, see Fig. '7. When down the stop I00 isadapted for engagement with the hub I04 of finger 31, or some otherappropriate part moving with the selector 2|, but when the stop I00 isup the selector can move to its frontmost position under the stop andregister with releaser 30.

Assuming the parts to be in the position shown in Fig. 3 with the rightend of lever 81 and stud 89 raised, the rod 95 will hold the stop I00 inhigh position and the selector will register with releaser 30 as shownin Fig. 7 when shuttle box A and the shuttle S are active. If weltexhaustion is indicated in shuttle S upon its arrival at the magazineend of the loom releaser 30 will be raised and the dog 12 will be movedby spring I4 to its active position over stud 89 as shown in dottedlines in Fig. 3. Upon descent of releaser 30 the dog I2 will engage stud89 and rock lever 81 in a clockwise direction as viewed in Fig. 3 to theposition shown in Fig. 1, therebyraising stud 90 for cooperation withdog 82 at a subsequent replenishing operation of the loom and alsolowering rod 95 so that the stop I00 can move by gravity to stoppingposition when able to do so.

Shuttle S will then be picked to the opposite side of the loom and gangG will shift, whereupon the selector will move rearwardly and stop I00will fall to its low position between bearing 23 and the selector to theposition shown in Fig. 8. Upon return of shuttle S to action theselector 2| will be moved forwardly by spring I! but will be arrested bystop I00 to register with releaser 3I. At the next replenishment ofshuttle S, therefore, the dog 02 will engage stud 90 as releaser 3Idescends in the same manner as that already described for the partsassociated with the releaser 30, and lever 81 will be given a reverserockingmovement and return to the position shown in Fig. 3. Rod and stopI00 are now out of stopping position and are back to the position shownin Fig. 7. At, a later return to activity of shuttle S, spring II willmove the releaser 2I to its, extreme forward position in register withreleaser 30.

In this way the successive releases of bobbins from the front pair ofstacks draw bobbins alternately from the stacks 25 and 26 and the latterare uniformly depleted.

The mechanism for controlling the rear position of selector 2I andassociated with the rear pair of stacks 21 and 28 is very similar tothat already described, and is shown in Fig. 4.

Each of the releasers 32 and 33' is provided with an upward extension H0and a dog III. A sec-.

and plate II2 similar to plate I5 is fastened to the magazine andcooperates with the dogs IIIi tokeep them in idle position when thereleasers, 32 and 33 are down. A lever II5 similar to lever 87 ispivoted on the plate H2 and has front and back lugs II 6. and III,respectively, for cooperation with their corresponding-dogs. A rod I20similar to rod is connected to lever H5, in this case however, to theleft of the lever pivot. H8. The lower end of the rod I20 is providedwith a stop I2I similar to stop I00 but reversed as to its setting andhas arms I22 to straddle the shaft 22. 4

Assuming that the left end of lever I I5 and its lug II! are in highposition to. raise stop I2I out of the path of selector 2I, and assumingfurther that shuttle S is active so that the connector II has rocked thelever I5 to its extreme left hand position as shown in Fig. 9, theyselector will register'with releaser 33. If the shuttle S is depleted onarrival at the magazine end of the loom, releaser 33 rises and its dogIII will overhang lug 1, as shown in full lines, Fig. 4. Downwardmovement of releaser 33 will rock lever II5 from the full to the dottedline position of Fig. 4 to raise lug H6 and also permit stop I2I to fallto stopping position when it is able to do so. Shuttle S is then pickedto the opposite side of the loom, shuttle S is again active and selector2| moves forwardly to permit stop I2I to fall from the position of Fig.9 to the position of Fig. 10- between the selector and bearing 24.

.When shuttle S is again active the upward shift of gang G will exert apull on connector II tending to move the selector to its rearmostposition, but since stop I2I is in position to engage rear hub I04 itcauses the selector to register with releaser 32, and provision musttion of Fig. 9 to the open position of Fig. 10 as the gang G continuesto rise after selector 2| has engaged stop I2I.

When shuttle S again needs replenishing releaser 32 will be raised andupon subsequent depression its dog III will engage lug Ilfi to rocklever II5 back to the full line position-of Fig. 4, thereby raising thestop I2I. return to action of shuttle S after stop l2l has been raisedthe selector 2I will move to its rearmost position without stretchingspring Obviously spring I30 is stronger than spring I].

In the foregoing description I have set forth two springs forcontrolling the position of the in the box motion connector.

Upon the next.

to connect the springs and the shuttle box control to the selector insuch a, way that the relative strength of the spring is immaterial.Thus, in Fig. 12 I have shown a lever I35 the upper end of which issimilar to lever I5, but having an arm I36 adapted for cooperation witha modified form of attachment with the box connector. Arm I35 carries aswivel I21 freely rotatable on the arm and a rod I38 is slidablevertically through the swivel. The upper end of rod I38 is provided withan adjusting nut I40 between which and the swivel is located acompression spring I 4I.

Below and normally engaging the swivel is a collar I42 secured to therod and receiving the upward thrust of a, second compression spring I43the lower end of which exerts its pressure against a fixed bracket I44.The lower end of the rod may have threaded thereto a head I45 attachedto a connector I46 which extends directly to the box motion control andexcept for spring I30 is similar to connector II.

In this modified form of selector control slackening of the tension ofconnector I46 will permit spring I43 to expand and rock the lever I35 toits extreme right hand position and register the selector with the firststack. If the front stop is down expansion of spring I43 will bearrested and the selector will register with the second stack. When theselector is to cooperate with the releasers of the back pair of stacksthe connector I46 will be pulled by the box motion and exert a downwardpull on the nut I40, thereby exerting a force on a spring I4I whichtends to turn the lever I35 in a counterclockwise direction as viewed inFig. 12. If the rear stop is up spring I4I will undergo little if anycompression and the selector will register with the rearmost releaser,but if the rear stop is down spring I4I will be subjected to additionalcompression when the selector strikes the stop as the connector I46continues to move downwardly.

It will be obvious from Fig. 12 that each of the springs I4I and I43performs its positioning function independently of the other and thatthey may therefore be of the same or different strengths. As is the casein the spring arrangement first described, however, one spring tends tomove the selector into registry with the releasers of the first stackwhen the connector from the box motion is slackened, and the otherspring tends to move the selector into register with the releasers ofthe rear pair of stacks when the box motion connector is tensioned. Bothsprings in both arrangements undergo deformation when opposed by a stop.

From the foregoing it will be seen that I have provided a weitreplenishing loom wherein each of two shuttles which are alternatelyactive can be replenished from a pair of stacks of reserve bobbins bythe use of a selector 2| of usual form, thereby permitting conversion ofthe loom to the regular automatic operation wherein four differentcolors can be used in the magazine. It will also be seen that I haveprovided a stop for each end of selector 2I, the front stop I beingalternately in and out of stopping position to cause alternate drawingof bobbins from the front pair of stacks for the replenishment ofshuttle S, and stop IZI being similarly in and out of stopping positionat the back of the selector to permit replenishment of shuttle S bybobbins drawn alternately from the rear pair of stacks. It will furtherbe seen that I employ the usual rod 22, a, customary part of theselector 2| to serve as a guide for the stops I00 and I2I. The twocontrol units for the front and back pairs of stacks are similar exceptfor the location of the rods which control the selector stops. Also, itwill be seen that the relatively strong spring I30 overpowers the springI1, but in turn is overpowered by the force derived from the shuttleboxes when the rear stop I2I is in stopping position to register theselector 2I with releaser 32. The selector is therefore moved by twoyielding forces one tending to move it forwardly and the other tendingto move it rearwardly and these forces accommodate themselves to theconditions set up by the stops I00 and I2I.

Having thus described my invention it will be seen that changes andmodifications may be made therein by those skilled in the art withoutdeparting from the spirit and scope of the invention and I do not wishto be limited to the details herein disclosed, but what I claim is: I

1. Ina weft replenishing loom operating with two shuttles which arealternately active and having control mechanism movable to determinewhich shuttle shall be active, the loom having a pair of stacks ofreserve bobbins for each shuttle and a bobbin releaser for each stack, areleaser selector movable to four positions in each of which saidselector registers with one of said releasers, two actuators for theselector both under control of said control mechanism and alternatelyoperative to position said selector, depending upon the position of saidcontrol mechanism, one actuator acting to move the selector in onedirection toward registry with the releasers of one pair of stacks andthe other actuator acting to move the selector in the opposite directiontoward registry with the releasers of the other pair of stacks, andmeans cooperating with each actuator when the latter is operative tocause said selector to register first with one releaser and then withthe other releaser of the associated pair of stacks.

2. In a weft replenishing loom operating with two alternately activeshuttle boxes each movable by control mechanism to active position andthe loom having a pair of stacks of reserve bobbins for each shuttlebox, a bobbin releaser for each stack, a selector common to saidreleasers and movable to four positions to register with said releasers,one at a time, means under control of said control mechanism to move theselector toward registry with th releasers of one pair of stacks whenone shuttle box is active, a controller for the selector cooperatingwith said means and associated with said one pair of stacks causing theselector to register alternately with the releasers of said one pair ofstacks for successive operations of the releasers of said one pair ofstacks, a second controller for the selector corresponding to thereleasers of the other pair of stacks, and other means under control ofsaid control mechanism overpowering the first means when the othershuttle box is active and cooperating with said second controller tocause the selector to register alternately with the releasers of saidother pair of stacks for successive operations of the releasers of saidother pair of stacks.

3. In a weft replenishing loom operating with two alternately activeshuttles controlled by a mechanism to determine which shuttle shall beactive, the loom having a pair of stacks of reserve bobbins for eachshuttle box, a bobbin releaser for each stack, a selector common to saidreleasers and movable to'tour positions to register with said releasers,one, at a time, a controller associated with one of said pairs of stacksto determine the position of the selector relatively to the releasers ofsaid one pair of stacks, asecond controller associated with the otherpair-of stacks :for determining the position of the selector relativelyto the releasers of said other pair of stack-s, means controlled by saidcontrol mechanism and cooperating with the first controller to registerthe selector with one or the other of the releasers of said one pair ofstacks depending upon the position of said first controller when oneshuttle is active, and other means also controlled by said controlmechanism and cooperating with the second controller to register theselector with one or the other of the releasers of said other pair ofstacks depending upon the position of said second controller when theother shuttle is active, each controller being operated by thecorresponding releasers and caused by successive movements of the latterto cooperate with the associated means and register the selectoralternately with the releasers of the corresponding pair of stacks.

a. In a weft replenishing loom operating with a pair of alternatelyactive shuttles and mechanism determining which shuttle shall be active,the loom having a :pair of stacks of reserve bobbins for each shuttlebox, a bobbin releaser for each stack, a selector common to thereleasers and movable to four positions to register with said releasers,one at a time-two controllers for the selector, one associated with eachpair of stacks and each controller operated by the releasers of thecorresponding pair of stacks, a o

spring operatively connected to said mechanism and said selector andcooperating with the con troller of one pair of stacks to cause saidselector to register alternately with the releasers of said one pair ofstacks for successive operations of the releasers of said one pair whenone shuttle is active, and a second spring stronger than the firstspring operatively connected to said mechanism and said selector andcooperating with the controller of the other pair of stacks to registersaid selector alternately with the releasers of said other pair ofstacks for successive operations of the releasers of said other pair ofstacks when the other shuttl is active.

5. In a weft replenishing loom operating with two shuttles and controlmechanism to determine which shuttle shall be active and having a pairof stacks of reserve bobbins for each shuttle box, a bobbin releaser foreach stack, a selector movable to fourpositions to register with saidreleasers, one at a time, two resilient means operatively connected tothe control mechanism operatively connected to the selector andalternately operative to position said selector, depending upon whichshuttle is active, one of said resilient means moving the selectortoward registry with the releasers of one pair of stacks and the otherresilient means moving the selector toward registry with the releasersof the other pair of stacks, and a controller for each pair of stacks,

each controller cooperating with the associated resilient means to causealternate operations of the releasers of: the corresponding pair ofreleasers for successive replenishments of the corresponding shuttle.

6. In a weft replenishing loom operating with two alternately activeshuttles and control mechanism to determine which shuttle shall beactive, the loom having a pair of stacks of reserve bobbins for eachshuttle box, a bobbin releaser for each stack, a releaser selectorcommon to the releasers and movable to four position to register withall the releasers, one at a time, means controlled by said controlmechanism to move the selector into register with one of the releasersof one pair of stacks when one shuttle is active, other means alsocontrolled by said. control mechanism to move the selector into registerwith one releaser of the other pair of-stacks when the other shuttle isactive, and a movable selector stop for each pair of stacks which whenin stopping position cooperates with the corresponding means to registerthe selector with the other releaser of the corresponding pair ofstacks.

7. In a weft replenishing loom operating with twoalternately activeshuttles and control mechanism to determine which shuttle shall beactive, the loom having a pair of stacks of reserve bobbins for eachshuttle and a bobbin releaser for each stack and-operating with areleaser selector common to the releasers and-movable to four positionsto register with all the releasers, one at a time, means controlled bysaid control mechanism to move the selector into register with onereleaser of one pair of stacks when one shuttle is active, other meansalso controlled by said control mechanism to move the selector intoregister with one releaser of the other pair of stacks when the othershuttle is active, and a pair of selector stops, one for eachpair ofstacks, said one releaser of each pair of stacks operative to move thecorresponding stop into stopping position relatively to said selector,each stop when in stopping position cooperating With thecorrespondi-ngmeans to register the selector with the other releaser of thecorresponding pair of stacks.

8. In a weft replenishing loom operating with two alternately activeshuttles and control mechanism to determine which shuttle shall beactive, the loom having a pair of stacks of reserve bobbins for eachshuttle box and a bobbin releaser for each stack and operating with areleaser selector common to the releasers and movable to four positionsto register with all the releasers,

one at a time, means under control of said controlmechanism to move theselector into register with one releaser of one pair of stacks when oneshuttle is active, other means also under control of said controlmechanism to move the selector into re ister with one releaser of theother pair of stacks when the other shuttle is active, a selector stopfor each pair of stacks, and a controlling for each stop to effectmovement of the latter into stopping position when the selector movestoward the other stop and cooperate with the corresponding means toregister the selector with the other releaser of the corresponding pairof stacks.

9. In a weft replenishing loom operating with two alternately activeshuttle boxes controlled by mechanism moving to determine which shuttleshall be active, the loom having a pair of stacks of reserve bobbins foreach shuttle and a bobbin releaser for each stack and a releaserselector movable along a given path to register with the releasers, oneat a time, two means controlled by said control mechanism effective tomove said selector along said path in opposite directions, one means forone direction when one shuttle box is active and the other means for theopposite direction when the other shuttle box is active, said mechanismby the position thereof determining which means shall be effective tomove said solector, a pair of selector stops, one for each pair ofstacks and one at each end of said, path, each stop moving alternatelyinto and out of said path for successive replenishments of theassociated shuttle by bobbins drawn from the corresponding pair ofstacks and cooperating with the corresponding means to register saidselector first with one and then the other releaser of the correspondingpair of stacks.

10. In a bobbin stack selector stop controller unit for a weftreplenishing mechanism operating with a stack selector and a pair ofbobbin releasers each having an operating dog, said unit comprising abody for attachment to the mechanism and having a lever pivoted on saidbody for engagement with the dogs of said releasers and connected to thestop.

In a weit replenishing mechanism having two pairs of stacks of reservebobbins and a bobbin releaser for each stack and operating with areleaser selector movable to four positions in each of which saidselector registers with one of said releasers, two stops for theselector, one corresponding to each pair of stacks and each stop movingalternately into stopping and non-stopping position, actuator means forthe selector which when moving in one direction moves the selectortoward registry with the releasers of one pair of stacks and when movingin the opposite direction moving the selector toward registry with thereleasers of the other pair of stacks, said means cooperating with eachstop and, depending upon whether the latter is in stopping ornonstopping position, registering the selector with one or the other ofthe releasers of the corresponding pair of stacks.

12. In a weft replenishing mechanism having two pairs of stacks ofreserve bobbins and a bobbin releaser for each stack and operating witha releaser selector movable to four positions in each of which saidselector registers with one of said releasers, two stops for theselector, one corresponding to each pair of stacks and each stop movingalternately into stopping and non-stopping position, actuator means forthe selector including two springs, said actuator when moving in onedirection acting through one spring to move the selector toward registrywith the releasers 01 one pair of stacks and when moving in the otherdirection acting through the other spring to move the selector towardregistry with the releasers of the other pair of stacks, each springcooperating with the corresponding stop and depending upon whether thelatter is in stopping or non-stopping position, registering the selectorwith one or the other of the releasers of the corresponding pair ofstacks.

13. A stop to control the registry of a laterally shiftable reservebobbin stack selector relatively to bobbin stacks in a multi-stack weftreplenishing loom by being either in or out of stopping positionrelatively to the selector, the latter including a shaft and the loomhaving a controller movable toward and away from the shaft, said stopcomprising a rod having a slot at one end thereof to receive thecontroller and having a head connected to the other end of the rod formovement against the selector when the controller moves in said slottoward the shaft and into stopping position relatively to the selectorwhen the latter shifts away from the head, said head being so made as tostraddle the shaft for guidance thereby in said movement.

VICTOR H. JENNINGS.

